Co-Founder, CFO
Castelion
In 2022, Andrew Kreitz co-founded Castelion, a weapons manufacturing startup based in El Segundo with Sean Pitt and Byron Hargis. In three years, the company managed to achieve unicorn valuation status. Geopolitical turmoil has revealed new kinds of weapons on the battlefield, and companies like Castelion have emerged to update the expensive, slow-to-make weaponry the United States developed during the Cold War. Castelion, and others like it, have been reviving the manufacturing and military readiness hub in the South Bay by developing and deploying new kinds of weapons that are scalable and cheaper. In 2025, 38% of all venture funding in Los Angeles went towards military and aerospace companies, making it a premiere industry in Southern California’s tech scene.
YEARS ON LA500: 1 Year on the LA500
